CN210090757U - Tight-jacketed optical cable - Google Patents
Tight-jacketed optical cable Download PDFInfo
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- CN210090757U CN210090757U CN201920947544.7U CN201920947544U CN210090757U CN 210090757 U CN210090757 U CN 210090757U CN 201920947544 U CN201920947544 U CN 201920947544U CN 210090757 U CN210090757 U CN 210090757U
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Abstract
The utility model discloses a tight set optical cable relates to optical cable technical field, aims at solving because the metal collapsible tube surface is smooth, when receiving external force stretching, the metal mesh grid can produce along the phenomenon that the metal collapsible tube surface slided, influences the problem of the tensile strength of optical cable. Its technical scheme main points are, including tightly wrapping up optic fibre, cladding in proper order the metal collapsible tube, woven metal mesh, aramid yarn structural layer and the sheath structural layer outside tightly wrapping up optic fibre, rectangular array is provided with a plurality of and metal woven mesh inlay card complex projections on metal collapsible tube's the circumference side. The metal mesh grid twines on metal collapsible tube, because the effect of blockking of projection, when receiving the exogenic action, restriction metal mesh grid along the sliding on metal collapsible tube surface, reaches the purpose that promotes the whole tensile properties of optical cable, and the sheath structural layer makes optical cable resistant oil and chemical corrosion.
Description
Technical Field
The utility model belongs to the technical field of the technique of optical cable and specifically relates to a tight tube optical cable is related to.
Background
The tight-buffered optical cable is an important component in an optical communication system, has wide application, small outer diameter, light weight, certain flame retardant property, moderate requirement on mechanical property and low cost. Therefore, the optical transmission module is commonly used for interconnection among optical transmission modules in communication equipment and interconnection among communication equipment in a communication machine room.
The prior Chinese patent with the publication number of CN202189172U discloses an armored field operation optical cable, wherein the optical cable is formed by stranding a plurality of optical fibers coated with tight sheathing layers through double spirals, the cable core is sequentially coated with aramid yarns, a metal hose and a metal woven mesh, which can overcome the defects of easy breakage and easy damage of the optical fibers and ensure that the optical cable has excellent tensile strength, compression resistance, explosion resistance, rat and animal pest resistance and other characteristics, the aramid armor provides larger short-term bearing tension for the optical cable, the TPU sheath has excellent flame retardant property, chemical property and high-strength wear resistance, and is applicable to various outdoor severe environments, and the tensile strength of the optical cable is jointly born by the aramid yarns, the metal hose and the metal woven mesh.
The above prior art solutions have the following drawbacks: due to the fact that the surface of the metal hose is smooth, when external tensile force is applied, the metal woven mesh can slide along the surface of the metal hose, tensile capacity of the optical cable is affected, and therefore the optical cable needs to be further improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a tight tube optical cable, it has the effect that promotes stretching resistance and compressive resistance.
The above technical purpose of the present invention can be achieved by the following technical solutions:
the utility model provides a tight-buffered optical cable, includes tight package optic fibre, cladding in proper order at metal collapsible tube, woven metal mesh, aramid yarn structural layer and the sheath structural layer outside tight package optic fibre, rectangular array is provided with a plurality of and metal woven mesh inlay card complex projection on metal collapsible tube's the circumference side.
Through adopting above-mentioned technical scheme, the winding of woven metal mesh is on metal collapsible tube, because the effect of blockking of projection, when receiving the exogenic action, restricts the sliding of woven metal mesh along the metal collapsible tube surface to promote the holistic tensile properties of optical cable.
The utility model discloses further set up to: and one end of the convex column, which is close to the metal hose, is inwards sunken to form a clamping groove.
Through adopting above-mentioned technical scheme, because the metal mesh inlay card of woven metal net is in the draw-in groove for the stable winding of woven metal net is on metal collapsible tube, when receiving the exogenic action, restricts the sliding of woven metal net along metal collapsible tube surface, thereby promotes the holistic tensile properties of optical cable.
The utility model discloses further set up to: a plurality of first filling grooves are formed in the circumferential side face, far away from the aramid yarn structural layer, of the sheath structural layer, and elastic particles are arranged in the first filling grooves.
By adopting the technical scheme, the elastic particles further enhance the flexibility and the impact absorption capacity of the sheath structure layer, when the sheath structure layer is impacted by a foreign object, a part of impact force is absorbed, the damage to the surface of the optical cable is reduced, and the compression resistance of the optical cable is improved.
The utility model discloses further set up to: the elastic particles are one or two of EPDM and TPE particles.
By adopting the technical scheme, the EPDM and the TPE both belong to thermoplastic elastomers, and have excellent elasticity and elastic recovery performance (flex resistance and creep resistance). The TPE is an environment-friendly low-carbon composite material which has the characteristics of high elasticity and high strength of rubber and injection molding processing. The environment-friendly, nontoxic and safe environment-friendly and environment-friendly composite material has the advantages of excellent colorability, soft touch, weather resistance, fatigue resistance, recycling and cost reduction. The EPDM rubber is an artificial synthetic rubber, mainly comprises ethylene and propylene, is synthesized by introducing a third monomer to obtain the EPDM rubber, and belongs to a saturated high polymer. EPDM has excellent aging resistance, good weather resistance and good wear resistance. Therefore, the elastic particles are filled into the first filling groove, the flexibility and the impact absorption capacity of the sheath structure layer are further enhanced, and the compression resistance of the optical cable is improved.
The utility model discloses further set up to: and a plurality of second filling grooves are formed in the circumferential side surface, far away from the aramid yarn structural layer, of the sheath structural layer, and water-absorbing expansion strips are arranged in the second filling grooves.
By adopting the technical scheme, the water-absorbing expansion strip is synthesized by the high-molecular inorganic water-absorbing expansion material and rubber, and has a certain elastic effect when not meeting water. When the gap appears on the sheath surface, during open-air torrential rain, the water-absorbing expansion strip can absorb water and expand in volume when meeting water, thereby blocking the gap, forming a waterproof plasticity colloid, preventing rainwater from permeating into the optical cable, and improving the waterproof performance of the optical cable.
The utility model discloses further set up to: the sheath structure layer is a PU elastomer sheath.
By adopting the technical scheme, the PU elastomer sheath has excellent flame retardance, high strength, high toughness, oil resistance, chemical corrosion resistance, tear resistance, good low-temperature flexibility, strong elasticity, good stress buffering property, wear resistance and pressure resistance.
The utility model discloses further set up to: the thickness of the sheath structure layer is 1-2 mm.
Through adopting above-mentioned technical scheme, when receiving great external force tensile, the difficult permanent deformation that produces of sheath structural layer has promoted the tensile property of optical cable.
The utility model discloses further set up to: the metal mesh grid is a galvanized steel wire mesh.
By adopting the technical scheme, the toughness of the galvanized steel wire mesh is stronger than that of steel wires with the same specification, and the flexibility and the impact absorption capacity of the optical cable are further enhanced, so that the compression resistance is improved.
To sum up, the utility model discloses a beneficial technological effect does:
1. through the arrangement of the convex columns, the metal woven mesh is wound on the metal hose, and due to the blocking effect of the convex columns, when the metal woven mesh is subjected to an external force, the metal woven mesh is limited to slide along the surface of the metal hose, so that the integral tensile property of the optical cable is improved;
2. through the arrangement of the elastic particles, the flexibility and the impact absorption capacity of the sheath structure layer are further enhanced by the elastic particles, when the sheath structure layer is impacted by a foreign object, a part of impact force is absorbed, the damage to the surface of the optical cable is reduced, and the compression resistance of the optical cable is improved;
3. through the setting of sheath structural layer, the PU elastomer sheath has good fire resistance, and intensity is high, toughness is high, resistant oily and chemical corrosion, tear-resistant, and low temperature pliability is good, and elasticity is strong, and stress buffering nature is good, wear-resisting withstand voltage.
Drawings
Fig. 1 is a schematic overall structure diagram of an embodiment of the present invention;
fig. 2 is a partial structural schematic diagram for showing the convex column.
In the figure, 1, tightly-packed optical fiber; 2. a metal hose; 3. a metal mesh grid; 4. an aramid yarn structural layer; 5. a sheath structure layer; 6. a convex column; 61. a card slot; 7. a first filling groove; 71. an elastomeric particle; 8. a second filling groove; 81. water-absorbing expansion strips.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1 and 2, for the utility model discloses a tight-buffered optical cable, including tight package optic fibre 1, cladding in proper order the metal collapsible tube 2, metal mesh grid 3, aramid yarn structural layer 4 and sheath structural layer 5 outside tight package optic fibre 1. The rectangular array is provided with a plurality of protruding columns 6 that inlay the complex with metal mesh grid 3 on the circumference side of metal collapsible tube 2, and the protruding column 6 is equipped with draw-in groove 61 near the one end of metal collapsible tube 2 inwards sunken. Because metal mesh grid 3 inlay card is in draw-in groove 61 for metal mesh grid 3 stable winding is on metal collapsible tube 2, when receiving the tensile effect of great external force, restricts metal mesh grid 3 and slides along metal collapsible tube 2 surface, thereby promotes the holistic tensile properties of optical cable. In this embodiment, metal mesh grid 3 is galvanized steel wire net, and galvanized steel wire net's toughness is still stronger than the same specification steel wire, further strengthens the compliance and the shock absorption ability of optical cable to compressive property has been improved. In addition, if the optical cable is applied in the field, the galvanized steel wire mesh can play a role in resisting moisture and preserving heat, so that the damage of expansion with heat and contraction with cold to the optical cable can be obviously reduced, and the service life of the optical cable is prolonged.
Referring to fig. 1, the number of the cores of the tightly-packed optical fiber 1 is 1-6, and the aramid yarn structural layer 4 is 1680dtex type, has enough tensile property and can be repeatedly wound for use. The sheath structure layer 5 is a PU elastomer sheath, and the thickness is 1.6 mm. The PU elastomer sheath has excellent flame retardance, high strength, high toughness, oil resistance, chemical corrosion resistance, tear resistance, good low-temperature flexibility, strong elasticity, good stress buffering property, wear resistance and pressure resistance. When the optical cable is stretched by a large external force, the sheath structure layer 5 is not easy to generate permanent deformation, and the tensile property of the optical cable is improved.
Referring to fig. 1, a plurality of first filling grooves 7 are formed in the circumferential side surface of the sheath structure layer 5 away from the aramid yarn structure layer 4, in this embodiment, the cross section of each first filling groove 7 is circular, elastic particles 71 are filled in each first filling groove 7, and the elastic particles 71 are bonded in the first filling grooves 7 through an aqueous acrylic adhesive. In this embodiment, the elastomer particles 71 are a mixture of EPDM and TPE particles. EPDM and TPE belong to thermoplastic elastomers, and have excellent elasticity and elastic recovery performance (flex and creep resistance). The TPE is an environment-friendly low-carbon composite material which has the characteristics of high elasticity and high strength of rubber and injection molding processing. The environment-friendly, nontoxic and safe environment-friendly and environment-friendly composite material has the advantages of excellent colorability, soft touch, weather resistance, fatigue resistance, recycling and cost reduction. The EPDM rubber is an artificial synthetic rubber, mainly comprises ethylene and propylene, is synthesized by introducing a third monomer to obtain the EPDM rubber, and belongs to a saturated high polymer. EPDM has excellent aging resistance, good weather resistance and good wear resistance. Therefore, the elastic particles 71 are filled in the first filling grooves 7, so that the flexibility and the impact absorption capacity of the sheath structure layer 5 are further enhanced, and the compression resistance of the optical cable is improved.
Referring to fig. 1, a plurality of second filling grooves 8 are formed in the circumferential side face, far away from the aramid yarn structural layer 4, of the sheath structural layer 5, the cross sections of the second filling grooves 8 are rectangular, and water-absorbing expansion strips 81 are bonded in the second filling grooves 8 through bonding agents. The water-absorbing expansion strip 81 is composed of a polymer inorganic water-absorbing expansion material and rubber, and the water-absorbing expansion strip 81 has a certain elastic effect when not in water. When gap appears on the surface of sheath structural layer 5, during open-air torrential rain, water-absorbing expansion strip 81 can absorb water volume expansion when meeting water, thereby blocking the gap, forming waterproof plasticity colloid, preventing inside the rainwater infiltration optical cable, promoting the waterproof performance of optical cable.
The implementation principle of the embodiment is as follows: because metal mesh grid 3 inlay card is in draw-in groove 61 for metal mesh grid 3 stable winding is on metal collapsible tube 2, when receiving the tensile effect of great external force, restricts metal mesh grid 3 and slides along metal collapsible tube 2 surface, thereby promotes the holistic tensile properties of optical cable.
The sheath structure layer 5 has excellent flame retardance, high strength, high toughness, oil resistance, chemical corrosion resistance, tear resistance, good low-temperature flexibility, strong elasticity, good stress buffering property, wear resistance and pressure resistance. The elastic particles 71 further enhance the flexibility and the impact absorption capability of the sheath structure layer 5, absorb a part of impact force when being impacted by a foreign object, reduce the damage on the surface of the optical cable, and improve the compression resistance of the optical cable.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides a tight set optical cable, includes tight package optic fibre (1), cladding in proper order metal collapsible tube (2), woven metal mesh (3), aramid yarn structural layer (4) and sheath structural layer (5) outside tight package optic fibre (1), its characterized in that: the metal hose (2) is characterized in that a plurality of convex columns (6) which are matched with the metal mesh grid (3) in a clamping and embedding manner are arranged on the circumferential side face of the metal hose in a rectangular array mode.
2. The tight-buffered optical cable of claim 1, wherein: one end of the convex column (6) close to the metal hose (2) is inwards sunken to be provided with a clamping groove (61).
3. The tight-buffered optical cable of claim 1, wherein: a plurality of first filling grooves (7) are formed in the circumferential side face, far away from the aramid yarn structural layer (4), of the sheath structural layer (5), and elastic particles (71) are arranged in the first filling grooves (7).
4. A tight buffered cable as claimed in claim 3, wherein: the elastic particles (71) are one or two of EPDM and TPE particles.
5. A tight buffered cable as claimed in claim 3, wherein: a plurality of second filling grooves (8) are formed in the circumferential side face, far away from the aramid yarn structural layer (4), of the sheath structural layer (5), and water-absorbing expansion strips (81) are arranged in the second filling grooves (8).
6. The tight-buffered optical cable of claim 1, wherein: the sheath structure layer (5) is a PU elastomer sheath.
7. The tight-buffered optical cable of claim 6, wherein: the thickness of the sheath structure layer (5) is 1-2 mm.
8. The tight-buffered optical cable of claim 1, wherein: the metal woven mesh (3) is a galvanized steel wire mesh.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920947544.7U CN210090757U (en) | 2019-06-22 | 2019-06-22 | Tight-jacketed optical cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920947544.7U CN210090757U (en) | 2019-06-22 | 2019-06-22 | Tight-jacketed optical cable |
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| CN210090757U true CN210090757U (en) | 2020-02-18 |
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| CN201920947544.7U Active CN210090757U (en) | 2019-06-22 | 2019-06-22 | Tight-jacketed optical cable |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111210936A (en) * | 2020-03-09 | 2020-05-29 | 安徽埃克森科技集团有限公司 | Cable assembly with high-temperature-resistant tear-resistant silicone rubber sheath |
| CN113189717A (en) * | 2021-05-12 | 2021-07-30 | 四川天邑康和通信股份有限公司 | Optical fiber of MPO/MTP type connector and preparation method thereof |
| CN113436791A (en) * | 2021-08-25 | 2021-09-24 | 海鑫电力设备制造(南通)有限公司 | Anti-interference swing-resistant data processing connecting cable |
-
2019
- 2019-06-22 CN CN201920947544.7U patent/CN210090757U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111210936A (en) * | 2020-03-09 | 2020-05-29 | 安徽埃克森科技集团有限公司 | Cable assembly with high-temperature-resistant tear-resistant silicone rubber sheath |
| CN113189717A (en) * | 2021-05-12 | 2021-07-30 | 四川天邑康和通信股份有限公司 | Optical fiber of MPO/MTP type connector and preparation method thereof |
| CN113436791A (en) * | 2021-08-25 | 2021-09-24 | 海鑫电力设备制造(南通)有限公司 | Anti-interference swing-resistant data processing connecting cable |
| CN113436791B (en) * | 2021-08-25 | 2021-11-05 | 海鑫电力设备制造(南通)有限公司 | Anti-interference swing-resistant data processing connecting cable |
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